Final answer:
In physics, 'C' stands for the speed of light and 'M' stands for mass. The equation E = mc^2 relates energy to mass and the speed of light. This equation shows that matter can be converted into energy and vice versa.
Step-by-step explanation:
In the context of physics, 'C' stands for the speed of light and 'M' stands for mass.
The equation E = mc^2 relates energy (E) to mass (m) and the speed of light (c).
It states that energy can be converted into mass and vice versa.
The equation is significant because it shows that matter can be converted into energy and energy can be converted into matter.